A modular display system for display devices, especially flat screen monitors which is a hub and spoke design whereby multiple motors are mounted at the same hub height. The assembly includes a UV lamp and a light guide spaced therefrom for receiving filtered light from the lamp and for directing light through the light guide to a selected target or work site for curing materials thereat. An inner valve seat connects to the inlet opening and an axially mobile valve piston is arranged to produce a closing force against a pressure acting at the inlet opening. The organic electroluminescence device exhibits a high luminance and a high luminous efficiency even at a low driving voltage. Concrete user classes are derived from new abstract classes such that management functionality is enabled for managed element properties.